vapidness (noun)

1. The vapidness of the royal court during the reign of King Louis XVI contributed to the French Revolution.

2. In Greek mythology, the vapidness of the character Narcissus led to his tragic downfall.

3. The vapidness of the protagonist's love interest in the romantic novel made their relationship lack depth and intensity.

4. The vapidness of the cartoon characters in the show resulted in shallow dialogues and predictable storylines.